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Fire detection and evacuation solutions that save lives.
MAN3070
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5
Surveying a site prior to designing and installing a wireless
system
All of the elements which make up a wireless fire detection system are connected
by means of radio waves. It is essential that the waves are not blocked or
attenuated between the different elements of the system.
In order to be sure of the integrity of a proposed wireless detection system a survey
of the installation location must be carried out without fail before the final decision
to use the wireless system is taken.
XPander Survey Unit
The XPander Survey Tool, part no 4112
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1001, has been developed in order to be able to conduct a full survey and be sure
of the integrity of the system in operation.
Full instructions for use of the survey kit are contained in a booklet, reference number MAN3080, issued with the kit. It is
important that the results of the survey be recorded and remain with the other design documentation. A sheet is included in
the booklet supplied with the survey kit and is also available from the Ampac website.
Training in the technique of surveying a site and designing an XPander system is mandatory.
Optical Smoke Detectors
Optical detectors have long been recommended as good general purpose smoke detectors. Modern optical detectors
incorporate sensors which detect both black and grey smoke and are thus useful over a wide range of fires.
Optical detectors should particularly be used in escape routes such as corridors where the smoke might have aged before it
reaches the detector.
Heat Detectors
Heat detectors might be considered if it is not possible to use smoke detectors. This will be the case where normal industrial
processes produce substances which could be mistaken for smoke by a smoke detector, eg, flour mills, textile mills or
loading bays with diesel
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engined vehicles.
Radio Bases
Radio bases are available in 3 different styles:
Audible Visual radio base
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for sounders and visual indicators only
Radio base
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for all detector head types
Combined radio bases
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that have built in Audible Visual capabilities and are compatible with all detector head types
Choosing a Detector
